I HAVE A D/N 501E SLOT #1 MOVED SHIMS FOR CANS TRIED VENDING CANS GOT STUCK FIGURED OUT WHAT I DID WRONG FIXED SHIMS. BUT NOW WHEN I SELECT TO VEND NOTHING SO I SWAPPED RELAY NOTHING. IT READS TRY OTHER SELECTION ANY THING THAT MIGHT NEED RESET.TRIED TEST VENDING AND IT WORKS BUT NOTHING ELSE WHEN YOU TRY PUSHING THE SELECTION ANY IDEAS THANKS MIKE